To analogize to real life, I have friends with whom I agree 100% on politics, but I never talk to them about it, because they're annoying when they do it. But I also have friends who disagree with me on political and other issues, but we have wonderful conversations because of the manner in which we disagree.
I don't what Bluesky is doing will actually help with this problem. For one thing, I think it's design as a "feed" basically precludes any solid sort of discussion (compared to an Internet forum). The medium kind of encourages the "one-off potshots" you mentioned, and moderation won't do much to cure it.
I could be wrong though!